JPH1152484A - Projection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple projection device which is extremely conveniently carried, capable of viewing a video even without darkening and capable of projecting the video at any time and any place. SOLUTION: This device is constituted of at least one light source body 5 having directivity, an oscillation circuit 6 controlling the turning-on of the light source body 5, a film attachment part 9 holding a film 10 placed in front of the light source body 5 and a switch 7 opening and closing the oscillation circuit 6. By closing the switch 7, light is emitted from the light source body 5 and the emitted light is transmitted through the film 10 held by the attachment part 9 to project the video.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable projection device for projecting a photographed image like a projector.

[0002]

2. Description of the Related Art There is a key ring type flashlight in which a miniature light bulb is incorporated. By attaching a key to the room to this flashlight, you can easily insert the key into the keyhole by illuminating the door with the flashlight even in the dark when you return to the room at night. Also,
In a conventional slide projector, a travel scene or the like is formed into a film, and a slide film is put in a slide projector in a dark room and projected on a screen for observation.

[0003]

The above-mentioned key ring type flashlight is convenient for illuminating a keyhole in a dark place or for searching for a small object, but it is used less frequently and is portable even though it is portable. It was a bitter.
In addition, slide projectors were not portable and were not portable, and were rather used to display images in dark rooms at home parties and meetings. In view of this situation,
An object of the present invention is to provide a simple projection device that is portable, can view an image even when it is not dark, and can project an image anytime and anywhere.

[0004]

In order to solve the above-mentioned problems, the present invention provides at least one directional light source, a control circuit for controlling lighting of the light source, and
The light source body emits light by emitting a light by closing the open / close body, which comprises a film mounting portion that holds a film provided in the direction of the light source body and a power switch that opens and closes the control circuit. The projection device emits light having directivity through the film mounting unit and emits light outward.

According to the present invention, in order to solve the above-mentioned problems, a plurality of light sources having directivity are provided in parallel, a control circuit for controlling lighting of each light source, and an independent image in front of each light source are provided. A film mounting portion for holding a film, and an opening / closing body which is a power switch for opening / closing the control circuit, wherein one of the plurality of light sources is turned on by operating the opening / closing body, and arranged in front of the light source. And a projection device for projecting through the film.

In order to further solve the above-mentioned problems, in any one of the above, the light source is a high-intensity light emitting diode, and the light emitted from the light source disposed at the front of the film mounting portion is adjusted for focusing. The projection device was composed of a body. Furthermore, in order to solve the above-mentioned problems, a projection device in which the light source is a linear luminous body in the above.

In order to further solve the above-mentioned problem, the control circuit includes an oscillation circuit for controlling the lighting of the light source, and the projection device is configured to repeatedly emit light of the light source by opening and closing the opening and closing body. .

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the projection apparatus according to the present invention will be described below in detail with reference to the embodiments shown in the drawings.

[0009]

FIG. 1 is a transparent perspective view of a first embodiment of the projection apparatus of the present invention, and FIG. 2 is a plan view of the first embodiment. The projection device 1 is substantially rectangular and has a holder chain 2 on one side.
, And a rectangular case body 3 with both upper side pieces bordered
And a light-transmitting light guide 4 fitted into the case body 3. In the center of the case body 3, an LED 5, which is a directional high-luminance light source, is provided toward the light guide 4, and the LED 5 is attached to a transmission circuit 6 provided in the case body. It is connected to a power supply 8 which is a battery provided inside the case body 3 via a power switch 7 provided on the surface.

The LED 5 is a high-intensity light-emitting diode having a directivity of light emission. Light condensing part 11 formed in the concave part
The image 13 is condensed and projected on the screen 12 at a position distant from the projection device. This image 13 is fixed on the film 10 in advance.

The film 10 has a size of one frame,
Use microfilms or positive films made for this application. This film is prepared using a film in which manga and the like are colored in advance. In addition, transparent and thin OH
Images or characters to be projected on the plastic film for P by a computer printer may be printed, cut into a film mounting portion of the projector, and cut.

FIG. 3 is a perspective view of the film mounting portion.
In order for the light guide 4 to be inserted into the case body 3, an insertion portion 4a one step smaller than the outer shape of the light guide is provided in parallel with the light-collecting portion surface to match the inner width of the case body opening 3a.

A film mounting portion 9 for mounting a film 10 is provided on the central surface of the insertion portion 4a of the light guide. The structure of the film mounting portion 9 is L-shaped in cross section, the front surface is concave, and the groove 9a extends along the opening surface 3a of the case body. The film 10 is inserted from the upper surface of the light guide 4 into the groove 9a. Groove 9a
Is slightly larger than the width of the film, the height h of the groove is larger than the height of the film, and the opening 9b at the center of the concave portion matches the image recording portion 10a of the film 10.

The film 10 is inserted into the groove 9a, and the image recording section 10a is mounted on the opening 9b. The insertion portion 4a of the light guide 4 is provided with a plurality of concave portions 4c,
The claw 3b, which is inserted into the opening 9b and provided at a corresponding portion inside the opening of the case body, is engaged with the recess 4c to fix the light guide 4.

FIG. 4 shows a block diagram of the present application. A power supply 8 is connected to the oscillation circuit 6 via a power switch 7, and the oscillation circuit 6 is provided with an LED 5. When the power switch 7 is closed, the power supplied from the power supply 8 is supplied to the oscillation circuit 6. The oscillating circuit 6 oscillates at a predetermined oscillating frequency by an existing technology such as a flip-flop circuit, and the light emitting portion of the LED 5 oscillates. The oscillation of the LED 5 is set to a speed at which the image flickers like a frame advance of a talkie movie.
Light emission of 5 repeats blinking.

The light emitted from the LED 5 passes through the original image fixed on the film 10 of the film mounting section 9 and is condensed by the light collecting section 1.
The light emission diffusion is corrected in step 1 and the image 13 is projected on the screen 12 which is an object plane remote from the projection device, and the image 13 is projected. In this image, the light emission of the LED 5 repeats strength and weakness by the function of the oscillation circuit, and the image appears to flicker like a talkie movie.

This image can be projected on a wall or the like because the light source has high brightness even in a dark place. The size of the image that can be projected can be projected on anything if the color of the wall etc. is not so dark, and the desired size can be freely adjusted by changing the distance between the image device and the wall etc. Can be changed to

Next, a second embodiment will be described. Some LEDs can emit light of a plurality of colors such as red, blue, and green in one LED. LE that emits multiple colors
By providing a plurality of buttons on the side of the case body in accordance with the emission color using D, switching the oscillation circuit by pressing each button and changing the emission color of the LED, the entire image that can be projected You can enjoy a different atmosphere by changing the color of.

Next, a third embodiment will be described. In the above description, the condensing unit, the film and the light source are one by one, but two or three of them are provided in parallel, and each film is switched by a switch provided on the side of the case. Can be projected respectively. For example, by switching between the first film, the second film, and the third film, it is possible to sequentially switch and project the three videos. This is because, for example, the image of a bird fluttering is switched and projected, so that the bird appears to be flying.

FIG. 5 shows a block diagram of the third embodiment. A power supply 8 is connected to the oscillation circuit 6 via a power switch 7, and a counter circuit 14 is connected to the oscillation circuit 6. Further, the counter circuit 14 is connected to a decoder circuit 15, and the decoder circuit 15 is provided with a plurality of independent LEDs L1, L2, L3２LN via a driver circuit 16.

When the power switch 7 is closed, the power supplied from the power supply 8 is supplied to the oscillation circuit 6, and the oscillation circuit 6 oscillates at a predetermined oscillation frequency.
The number corresponding to the number of LEDs up to N is counted, and information of the counted number is represented by data such as a binary number and transmitted to the decoder circuit 15. In the decoder circuit 15, based on data information such as a binary number from the counter circuit 14, the LEDs L 1 to LN are sequentially converted into signals for lighting or the like and sent to the driver circuit 16. In the driver circuit 16, each LED is sequentially turned on based on a signal from the decoder circuit 14. By providing a film of an image in which a bird flaps sequentially in front of each LED, an image in which a bird flaps is projected on the screen like a flip-flop cartoon.

In the above description, the LED of the light emitting section has been described as a high-intensity light emitting diode. However, the light emitting section may be a laser pointer used by a lecturer to point to a large chart or the like in a lecture or the like. And the images on the film can be projected without the light condensing part. Of course, the light emitting section may emit a certain amount of light without causing the oscillation circuit to oscillate.

[0023]

As described above, in the present application, important
One image can be turned into a film and attached to an image device to carry around. Anytime, any place can be projected if there is a wall that becomes a screen, and the image flickers like a frame-by-frame, so it feels like watching a talkie movie, and you can enjoy a lot of fun memories of images etc. It is.

Further, when a plurality of light sources are provided in the projection apparatus, an independent film is prepared for each light source, and the lighting of each light source is switched, the projected image can be viewed as a moving image. Further, since it is portable, it is useful as illumination when a light is required in a dark place, and is convenient.

[Brief description of the drawings]

FIG. 1 is a transparent perspective view showing a first embodiment of a projection device of the present invention.

FIG. 2 is a schematic plan view of the first embodiment.

FIG. 3 is a perspective view of a film mounting unit.

FIG. 4 is a block diagram of a first embodiment of the projection apparatus.

FIG. 5 is a block diagram of a third embodiment of the projection apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Projection apparatus 2 ... Holder chain 3 ... Case body 4 ... Light conductor 5 ... LED 6 ... Oscillation circuit 7 ... Power switch 8 ... Power supply 9 ... Film mounting part 10 ... Film 11 ... Condensing part 12 ... Screen 13 ... Video 14 ... Counter circuit 15 ... Decoder circuit 16 ... Driver circuit

Claims (5)

[Claims] At least one light source having directivity, a control circuit for controlling lighting of the light source, a film mounting unit for holding a film provided in a direction in which the light source is directed, A projection device, comprising: an opening / closing body that opens and closes, wherein the light source body emits light by closing the opening / closing body, and the emitted directional light passes through the film mounting unit and emits outward. . 2. A control circuit for arranging a plurality of light sources having directivity and controlling lighting of each light source, and a film mounting unit for holding a film having an independent image provided in a direction in which each light source is provided. And an opening / closing body that opens and closes the control circuit, wherein one of the plurality of light sources is turned on by operating the opening / closing body, and the light is projected through a film disposed in front of the light source. Projection device. 3. The light source according to claim 1, wherein the light source is a high-intensity light emitting diode, and the light source is arranged in front of a film mounting portion and adjusts the focus of light emitted from the light source. A projection device, comprising: 4. The projection device according to claim 1, wherein the light source is a linear light emitter. 5. The control circuit according to claim 1, wherein the control circuit includes an oscillation circuit for controlling lighting of the light source, and the light of the light source is repeatedly turned on and off by opening and closing the switch. Projection device.